This polysilicon market update presentation from March this year contained an updated graph of the classic PV module price reduction with cumulative volume learning curve. It has some interesting historical references and reinforces the fundamental stability of the long term price reduction trend. This trend is positive for the long term viability of PV, but there is nothing that predicts a rapid price decline from current levels. At these price levels, even with today's very low interest rates, PV still needs subsidies to survive, as is well illustrated by the recent PV declines in Germany, Spain, Italy and Australia, where subsidies were reduced or eliminated. The markets that grew to compensate for this decline, China, Japan and the US, introduced new or kept existing substantial subsidies. This essential understanding is lost to climate change advocates who continue to believe that policy change alone will succeed using current wind and solar technologies on their current cost reduction curves. Unfortunately they don’t grasp the decades that will have to pass before this comes to pass. StratoSolar is a possible answer that costs nothing more than an open mind. However it seems that open minds are an extremely rare commodity.